Stack Relative Indirect Indexed, Y Addressing

Stack Relative Indirect Indexed, Y Addressing is supported by eight instructions:

• ADC (opcode 73)
• AND (opcode 33)
• CMP (opcode D3)
• EOR (opcode 53)
• LDA (opcode B3)
• ORA (opcode 13)
• SBC (opcode F3)
• STA (opcode 93)

They are all two bytes long.

The indirect address lives on the stack at sum of the stack pointer and the 8-bit operand.

The effective address is generated by concatenating the data bank register to the indirect address, and then adding the Y index register to the 24-bit sum.

Syntax

LDA (sr, S), Y

See Also

• Stack Addressing
• Stack Relative Addressing

References

• Eyes & Lichty page 419, https://archive.org/details/0893037893ProgrammingThe65816/page/419
• section 3.5.24 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf
• Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#5.21